US7816686B2 - Forming silicides with reduced tailing on silicon germanium and silicon - Google Patents
Forming silicides with reduced tailing on silicon germanium and silicon Download PDFInfo
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- US7816686B2 US7816686B2 US11/811,694 US81169407A US7816686B2 US 7816686 B2 US7816686 B2 US 7816686B2 US 81169407 A US81169407 A US 81169407A US 7816686 B2 US7816686 B2 US 7816686B2
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- 229910021332 silicide Inorganic materials 0.000 title claims abstract description 25
- 229910000577 Silicon-germanium Inorganic materials 0.000 title claims description 67
- LEVVHYCKPQWKOP-UHFFFAOYSA-N [Si].[Ge] Chemical compound [Si].[Ge] LEVVHYCKPQWKOP-UHFFFAOYSA-N 0.000 title claims description 7
- 229910052710 silicon Inorganic materials 0.000 title description 6
- 239000010703 silicon Substances 0.000 title description 6
- 239000004065 semiconductor Substances 0.000 claims abstract description 85
- 239000000758 substrate Substances 0.000 claims abstract description 51
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical group [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000012535 impurity Substances 0.000 claims abstract description 7
- 229920005591 polysilicon Polymers 0.000 claims description 9
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 5
- 238000002955 isolation Methods 0.000 claims description 3
- 238000000407 epitaxy Methods 0.000 claims 1
- 239000010410 layer Substances 0.000 description 18
- 238000000034 method Methods 0.000 description 14
- 230000015572 biosynthetic process Effects 0.000 description 13
- 230000000694 effects Effects 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 3
- 238000002513 implantation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000001465 metallisation Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 206010010144 Completed suicide Diseases 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 229920002120 photoresistant polymer Polymers 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/7842—Field effect transistors with field effect produced by an insulated gate means for exerting mechanical stress on the crystal lattice of the channel region, e.g. using a flexible substrate
- H01L29/7848—Field effect transistors with field effect produced by an insulated gate means for exerting mechanical stress on the crystal lattice of the channel region, e.g. using a flexible substrate the means being located in the source/drain region, e.g. SiGe source and drain
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/28—Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/268
- H01L21/283—Deposition of conductive or insulating materials for electrodes conducting electric current
- H01L21/285—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation
- H01L21/28506—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers
- H01L21/28512—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers on semiconductor bodies comprising elements of Group IV of the Periodic Table
- H01L21/28518—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers on semiconductor bodies comprising elements of Group IV of the Periodic Table the conductive layers comprising silicides
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/74—Making of localized buried regions, e.g. buried collector layers, internal connections substrate contacts
- H01L21/743—Making of internal connections, substrate contacts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76838—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the conductors
- H01L21/76895—Local interconnects; Local pads, as exemplified by patent document EP0896365
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/12—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
- H01L29/16—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed including, apart from doping materials or other impurities, only elements of Group IV of the Periodic Table
- H01L29/161—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed including, apart from doping materials or other impurities, only elements of Group IV of the Periodic Table including two or more of the elements provided for in group H01L29/16, e.g. alloys
- H01L29/165—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed including, apart from doping materials or other impurities, only elements of Group IV of the Periodic Table including two or more of the elements provided for in group H01L29/16, e.g. alloys in different semiconductor regions, e.g. heterojunctions
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/66007—Multistep manufacturing processes
- H01L29/66075—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
- H01L29/66227—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
- H01L29/66409—Unipolar field-effect transistors
- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
- H01L29/66568—Lateral single gate silicon transistors
- H01L29/66636—Lateral single gate silicon transistors with source or drain recessed by etching or first recessed by etching and then refilled
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
Definitions
- This invention relates generally to semiconductor devices, and more particularly to structures and formation methods for metal-oxide-semiconductor (MOS) devices having silicon germanium regions.
- MOS metal-oxide-semiconductor
- stress may be introduced in the channel regions of the MOS devices to improve carrier mobility.
- NMOS n-type metal-oxide-semiconductor
- PMOS p-type metal-oxide-semiconductor
- a commonly used method for applying compressive stresses to the channel regions of PMOS devices is to grow SiGe stressors in the source and drain regions.
- Such a method typically includes forming a gate stack on a semiconductor substrate; forming gate spacers on sidewalls of the gate stack; forming recesses in the silicon substrate; and epitaxially growing SiGe stressors in the recesses. Since SiGe has a greater lattice constant than silicon, it applies a compressive stress to the channel region, which is located between a source SiGe stressor and a drain SiGe stressor. Similarly, SiC stressors may be formed for NMOS devices. Since SiC has a smaller lattice constant than silicon, tensile stresses may be applied to the channel regions.
- FIG. 1 illustrates a layout of a commonly used circuit, which includes PMOS devices 2 and 4 sharing common source 6 .
- PMOS device 2 further includes gate poly 7 and drain region 8 .
- PMOS device 4 further includes gate poly 9 and drain region 10 .
- PMOS devices 2 and 4 are formed using conventional stressor formation processes, and thus common source 6 and drain regions 8 and 10 are SiGe stressors.
- the connection to common source 6 is made through a soft connection, which includes SiGe line 12 , N+ region 14 connected to SiGe line 12 , and contacts 16 .
- SiGe line 12 is formed simultaneously with the formation of common source 6 and drain regions 8 and 10 .
- a silicide layer (not shown) is then formed on N+ region 14 , SiGe line 12 , common source 6 and drain regions 8 and 10 .
- FIG. 2 illustrates a cross-sectional view of the structure shown in FIG. 1 , wherein the cross-sectional view is taken along line A-A′ in FIG. 1 .
- Silicide layer 18 is formed across common source 6 , SiGe line 12 , and N+ regions 14 . It has been found that in region 19 , which is an interface region between SiGe line 12 and N+ region 14 , the thickness of silicide layer 18 is significantly less than in other regions. This may be related to the fact that metals tend to form silicide with silicon better than germanium.
- the reduction in thickness of silicide layer 18 in region 19 causes sheet resistance tailing.
- the sheet resistances of the samples, without tailing effect should be within a relatively small range. If tailing effects occur, however, an increased percentage of the samples will have higher sheet resistances. It has been found that sheet resistances are directly related to the RC delays of the integrated circuits. The tailing effects will cause the increase in RC delay, and possibly function failure of the integrated circuits. A solution is thus needed.
- a semiconductor structure includes a semiconductor substrate; a gate stack on the semiconductor substrate; an epitaxial region having at least a portion in the semiconductor substrate and adjacent to the gate stack, wherein the epitaxial region comprises an impurity of a first conductivity type; a first portion of the semiconductor substrate adjoining the epitaxial region, wherein the first portion of the semiconductor substrate is of the first conductivity type; a second portion of the semiconductor substrate adjoining the first portion, wherein the second portion of the semiconductor substrate is of a second conductivity type opposite the first conductivity type; and a silicide region on the epitaxial region and the first and the second portions of the semiconductor substrate.
- a semiconductor structure in accordance with yet another aspect of the present invention, includes a semiconductor substrate; a gate over the semiconductor substrate; and a silicon germanium (SiGe) region in the semiconductor substrate.
- the SiGe region comprises a first portion adjacent the gate and a second portion adjoining the first portion.
- the second portion has a width substantially smaller than a width of the first portion.
- the semiconductor structure further includes a heavily doped p-type region adjoining the second portion of the SiGe region, wherein the heavily doped p-type region has a substantially same width as the second portion of the SiGe region; and a pickup region adjoining the heavily doped p-type region, wherein the pickup region is of n-type.
- a semiconductor structure includes a semiconductor substrate; a first p-type metal-oxide-semiconductor (PMOS) device comprising a first gate polysilicon on the semiconductor substrate; a second PMOS device comprising a second gate polysilicon on the semiconductor substrate, wherein the first the second gate polysilicons are parallel; a SiGe region between and adjacent the first and the second gate polysilicons, the SiGe region having a first width; a SiGe extension adjoining the SiGe region; a P+ region adjoining the SiGe extension; an N+ extension region adjoining the P+ region, wherein the SiGe extension, the P+ region, and the N+ region have a same second width smaller than the first width; and a pickup region adjoining the N+ extension region, wherein the pickup region is an N+ region.
- PMOS metal-oxide-semiconductor
- FIG. 1 illustrates a layout of a conventional semiconductor structure, wherein a soft connection is made to electrically connect a pickup region and a SiGe region;
- FIG. 2 illustrates a cross-sectional view of the structure shown in FIG. 1 ;
- FIG. 3 illustrates a layout of an embodiment of the present invention, wherein a P+ region is inserted between an N+ pickup region and a SiGe region;
- FIGS. 4 through 8 illustrate intermediate stages in the formation of the embodiment shown in FIG. 3 ;
- FIG. 9 illustrates an alternative embodiment of the present invention.
- FIG. 3 illustrates a layout of an embodiment of the present invention.
- PMOS device 20 includes drain region 30 , common source region 28 and gate electrode 24 , which may be formed of polysilicon.
- gate electrodes of the MOS devices are equally referred to as gate polys, although they can be formed of other conductive materials such as metals, metal suicides, and combinations thereof.
- PMOS device 22 includes common source region 28 , drain region 32 and gate poly 26 .
- Gate spacers 62 are formed on sidewalls of gate polys 24 and 26 .
- Drain regions 30 , 32 and common source 28 are formed of silicon germanium (SiGe). Common source 28 is also referred to as SiGe region 28 .
- the connection to common source region 28 is made through a soft connection, which includes an N+ pickup region 50 .
- a narrow doped region including doped SiGe region 34 and P+ region 60 , connects N+ pickup region 50 and common source region 28 .
- Regions 28 , 30 , 32 , 34 , 50 and 60 preferably have a silicide layer (not shown) formed thereon to improve the contact.
- Contacts 39 are formed to electrically connect the silicide layer to a metallization layer (not shown).
- an interface between P+ region 60 and region 34 is parallel to the gate length directions (which are parallel to the source-to-drain directions) of PMOS devices 20 and 22 .
- an interface between P+ region 60 and N+ pickup region 50 is parallel to the gate length directions of PMOS devices 20 and 22 .
- FIGS. 4 through 8 illustrate intermediate stages in the formation of the structure shown in FIG. 3 .
- FIG. 4 illustrates a top view of a starting structure.
- Insulating regions 46 are formed in a semiconductor substrate, defining active regions 38 , 40 and 42 of the semiconductor substrate.
- Exemplary insulating regions 46 include shallow trench isolation (STI) regions.
- Active regions 38 , 40 and 42 form a continuous region.
- Active region 42 is substantially narrower than active regions 38 and 40 .
- active region 42 has a width W 1 of less than about 0.3 ⁇ m, and more preferably less than about 0.1 ⁇ m, and even more preferably less than about 0.08 ⁇ m.
- Length L 1 of active region 42 is preferably less than about 0.25 ⁇ m, and more preferably between about 0.1 ⁇ m and about 0.2 ⁇ m.
- Gate polys 24 and 26 are formed over active region 40 .
- gate dielectric layers (not shown) are formed between gate polys 24 and 26 and the underlying active region 40 .
- the formation processes of gate polys 24 and 26 and the gate dielectric layers are well known in the art, and thus are not repeated herein.
- active region 38 is doped by implanting n-type impurities, such as phosphorous, arsenic, and combinations thereof.
- n-type impurities such as phosphorous, arsenic, and combinations thereof.
- N+ pickup region 50 is formed.
- N-mask 41 (shown as shaded with dots), is formed to cover entire active region 40 and at least a portion of active region 42 , but leaves active region 38 and some surrounding insulating regions 46 exposed to the implantation.
- the exposed region has a rectangular shape.
- N-mask 41 may include photoresist, silicon nitride, or other commonly used mask materials.
- pickup region 50 has an impurity concentration of greater than about 1E20/cm 3 .
- pickup region 50 extends slightly into active region 42 , for example, for a distance D 1 of less than about 0.05 ⁇ m.
- FIG. 6 illustrates the formation of silicon germanium (SiGe) regions.
- P-mask 43 which covers dotted regions but leaves the un-dotted region open, is formed.
- P-mask 43 leaves a rectangular region, except that an extended portion of P-mask 43 extends into the rectangular region.
- P-mask 43 has a boundary 52 substantially overlapping boundary 48 of N-mask 41 (refer to FIG. 5 ).
- the extended portion of the P-mask 43 preferably has length L 2 of more than about 0.06 ⁇ m. Width W 2 of the extended portion of P-mask 43 is preferably greater than width W 1 of active region 42 .
- the extended portion of the P-mask 43 extends beyond active region 42 for more than about 0.08 ⁇ m as a margin.
- Boundary 54 of the extended portion of P-mask 43 is preferably spaced apart from boundary 56 of the original active region 40 , for example, for more than about 0.08 ⁇ m. This is to prevent the occurrence of the case that the extended portion of P-mask 43 is spaced apart from the nearest boundary of active region 40 with a very small distance. In this case, there is a chance that the portion of active region 42 between boundaries 54 and 56 will not be fully filled with SiGe in the subsequent process steps.
- P-mask 43 is formed by applying logic operations (LOP) to a conventional mask that does not have the extended portion. Through LOP, the boundary of the P-mask may be revised as required.
- LOP logic operations
- SiGe regions are then formed using P-mask 43 .
- recesses are first formed in exposed active regions 40 and 42 (refer to FIG. 5 ).
- a semiconductor material preferably SiGe, is epitaxially grown in the recesses by selective epitaxial growth (SEG), forming common source 28 and drain regions 30 and 32 .
- P-mask 43 is removed, and gate spacers 62 are formed.
- Mask 45 (shown with dotted pattern) may be formed to cover a rectangular region, which is substantially similar to P-mask 43 , except the extended portion is not being removed.
- a p-type implantation is then performed. Accordingly, SiGe regions 28 , 30 and 32 are implanted with p-type impurities.
- Region 60 which is between N+ pickup region 50 and common source region 28 , forms a P+ region.
- P+ region 60 has a p-type impurity concentration of greater than about 1 E20/cm 3 .
- FIG. 7B illustrates a cross-sectional view of the structure shown in FIG. 7A , wherein the cross-sectional view is taken along a plane crossing line B-B′.
- FIG. 7C illustrates a cross-sectional view taken along a plane crossing line C-C′.
- SiGe regions 28 , 30 and 32 have a top surface higher than the top surfaces of P+ region 60 and N+ pickup region 50 .
- FIG. 8 illustrates the formation of silicide layer 64 , inter-layer dielectric (ILD) 66 and contact 39 , wherein FIG. 8 is a cross-sectional view taken along the plane crossing line C-C′ in FIG. 7A .
- silicide layer 64 may be formed by blanket forming a metal layer (not shown), annealing the wafer to cause a reaction between the metal layer and the underlying silicon or SiGe, and removing un-reacted metal layer so that silicide and/or germano-silicide remains.
- ILD 66 is formed, followed by the formation of contact 39 in ILD 66 .
- Contact 39 connects an overlying metallization layer (not shown) to silicide layer 64 , which is further connected to common source 28 .
- silicide region 68 which is close to the boundary (sidewall) of SiGe region 28 , tends to have a lesser thickness than other portions.
- a sheet resistance of silicide region 68 is greater than other portions of silicide layer 64 , causing tailing effects.
- the current may also flow through P+ regions 60 and SiGe region 28 in addition to silicide region 68 . The sheet resistance is thus reduced. Accordingly, the tailing effects are significantly reduced, and possibly substantially eliminated.
- N+ region 50 will adjoin and form an n-p junction with SiGe region 28 , preventing the current from flowing from SiGe region 28 . Accordingly, tailing effects occur.
- FIG. 9 illustrates an alternative embodiment of the present invention, wherein a source/drain region of the PMOS device adjoins STI region 46 instead of another PMOS device.
- pickup region 50 is formed, and is connected to the source/drain region 70 through P+ region 60 .
- the formation and dimensions of pickup region 50 and P+ region 60 may be essentially the same as in the embodiment shown in FIGS. 3 through 8 .
- NMOS devices which includes SiC stressors for applying tensile stresses to the respective channel regions of the MOS devices.
- the structures are similar to those illustrated in FIGS. 3 and 9 , except that the types of the discussed regions are inverted and SiGe regions are replaced by SiC regions.
- an N+ inserted region is formed to adjoin the SiC stressor and a P+ pickup region.
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US11/811,694 US7816686B2 (en) | 2007-06-12 | 2007-06-12 | Forming silicides with reduced tailing on silicon germanium and silicon |
CN2007101673827A CN101325217B (en) | 2007-06-12 | 2007-11-26 | Semiconductor structure |
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US11/811,694 US7816686B2 (en) | 2007-06-12 | 2007-06-12 | Forming silicides with reduced tailing on silicon germanium and silicon |
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US20100001352A1 (en) * | 2008-07-07 | 2010-01-07 | Nec Electronics Corporation | Semiconductor device and method of manufacturing the same |
US20110086479A1 (en) * | 2009-10-08 | 2011-04-14 | Pin-Chien Chu | Method for selective formation of trench |
US20110303980A1 (en) * | 2010-06-09 | 2011-12-15 | Globalfoundries Inc. | Semiconductor devices having stressor regions and related fabrication methods |
US8657769B2 (en) | 2009-11-04 | 2014-02-25 | Ossur Hf | Thoracic lumbar sacral orthosis |
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US20210408250A1 (en) * | 2020-06-24 | 2021-12-30 | Monolithic Power Systems, Inc. | Method of distributing metal layers in a power device |
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US20050184345A1 (en) * | 2003-07-25 | 2005-08-25 | Chun-Chieh Lin | Strained-channel semiconductor structure and method of fabricating the same |
US20050224798A1 (en) * | 2004-04-06 | 2005-10-13 | Texas Instruments, Incorporated | Process to improve transistor drive current through the use of strain |
US7612364B2 (en) * | 2006-08-30 | 2009-11-03 | Taiwan Semiconductor Manufacturing Company, Ltd. | MOS devices with source/drain regions having stressed regions and non-stressed regions |
US7592214B2 (en) * | 2006-10-26 | 2009-09-22 | Fujitsu Microelectronics Limited | Method of manufacturing a semiconductor device including epitaxially growing semiconductor epitaxial layers on a surface of semiconductor substrate |
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US20110086479A1 (en) * | 2009-10-08 | 2011-04-14 | Pin-Chien Chu | Method for selective formation of trench |
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US20110303980A1 (en) * | 2010-06-09 | 2011-12-15 | Globalfoundries Inc. | Semiconductor devices having stressor regions and related fabrication methods |
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US9269710B2 (en) | 2010-06-09 | 2016-02-23 | GlobalFoundries, Inc. | Semiconductor devices having stressor regions and related fabrication methods |
Also Published As
Publication number | Publication date |
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CN101325217B (en) | 2010-09-08 |
US20080308842A1 (en) | 2008-12-18 |
CN101325217A (en) | 2008-12-17 |
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